US3845700A - Ventilation shutter control of motor vehicle - Google Patents

Ventilation shutter control of motor vehicle Download PDF

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Publication number
US3845700A
US3845700A US00269075A US26907572A US3845700A US 3845700 A US3845700 A US 3845700A US 00269075 A US00269075 A US 00269075A US 26907572 A US26907572 A US 26907572A US 3845700 A US3845700 A US 3845700A
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United States
Prior art keywords
shutter
movable
vacuum chamber
air
vehicle
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Expired - Lifetime
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US00269075A
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English (en)
Inventor
A Lefeuvre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PEUGEOT and RENAULT
RENAULT PEUGEOT FR
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PEUGEOT and RENAULT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00764—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed

Definitions

  • This shutter and the fan speed are controlled through a rod adjustable in length and connected at one end to the movable wall of bellows forming a vacuum chamber and at the other end to the movable member of a rheostat and/or switch inserted in the electric circuit for energizing the fan motor, said vacuum chamber communicating with the vacuum area of a Venturi choke receiving the incoming air flow due to the relative wind.
  • the present invention relates in general to ventilation systems of motor vehicles and has specific reference to an automatic device for controlling a ventilation airintake shutter assembly, operating as a function of the vehicle speed in relation to the air.
  • the air necessary for ventilating, heating and demisting the interior of a passenger vehicle is taken at the front of the vehicle, by an intake disposed in an area exposed to an overpressure due to the vehicle operation.
  • a control device which is responsive to the pressure exerted by the relative wind at the front of the vehicle for starting, stopping and possible regulating the velocity of rotation of an auxiliary fan adapted to maintain a sufficient air throughput at low vehicle speeds, but obviously this device is illsuited for maintaining a constant output throughout the range of vehicle speeds.
  • the control device is adapted automatically to actuate the movable shutter of an air intake of the ventilation system of the motor vehicle which comprises a fan driven from an electric motor, this control device being characterised in that said shutter is controlled through a movable rod adjustable in length and connected on the one hand to the movable wall of a vacuum chamber communicating with the vacuum zone of a venturi choke having its inlet end supplied with air from the relative wind and on the other hand to the movable arm of a rheostat and/or switch inserted in the energizing circuit of said fan motor.
  • the speed of the ventilation fan and the angular position of the air intake shutter are adjusted automatically as a function of the velocity of the relative wind, i.e., the vehicle speed, the only manual operation required consisting in the preliminary setting of the shutter inclination.
  • FIG. 1 is a diagrammatic vertical section showing the front bonnet of a motor vehicle equipped with the shutter control device according to this invention.
  • FIG. 2 is an axial section illustrating on a larger scale details of a typical vacuum chamber constituting one of the elements of the device.
  • FIG. 3 is a plan view of a motor vehicle equipped with a transverse mounted Venturi.
  • FIG. 4 is an enlarged view of rheostat 14.
  • the ventilation shutter l is secured inside a ventilation duct 2 housed under the bonnet 3 of a passenger motor vehicle, behind the dashboard or instrument panel and beneath the windscreen 4.
  • the ventilation duct 2 communicates with the external atmosphere via an air intake 5.
  • a fan 6 driven from an electric motor 7 is fitted in the duct 2 behind said shutter l in order to draw the air flowing through said intake 5 and direct same towards the interior of the car via suitable duct means (not shown).
  • the shutter 1 (this shutter having for example a circular configuration) engages with its outer peripheral edge an annular wall 8 constituting throttled section of duct 2.
  • This shutter I is pivotally mounted about a shaft 9 nearer to the lower edge than to the upper edge of shutter 1; under these conditions, the edges of shutter 1 are constantly urged by gravity away from the annular wall 8 and thus keep a free passage in said duct 2.
  • the shutter 1 In the vicinity of its upper edge the shutter 1 comprises an integral lug 10 having its outer end pivotally connected to one end of a rod 11 having its opposite end 12 bent substantially at right angles.
  • a movable contact member 13 rigid with said rod 11 is in constant resilient sliding contact with the turns of the coil of a rheostat 14 connected via a movable rod 17 to the movable wall of a vacuum chamber 16.
  • This rheostat 14 is also solid with a tapped socket 18 so as to follow the axial movement adapted to be imparted to this socket 18 in one or the other direction by a control rod 20 engaging this socket with a corresponding screw-threaded portion, the rotation of this control rod 20 being adapted to be controlled by means of a knob 21 projecting from the instrument panel or dashboard of the vehicle.
  • the rod 20 comprises a ball joint 22 for swivel connection with the depending arm 23 rigid with said movable rod 17.
  • the vacuum chamber 16 also comprises a fixed wall 25 into which opens a pipe line 26 extending to the front 1 of the vehicle and having a forked section 27, 28 opening into a pair of diametrally opposite orifices formed in the throttled portion of a Venturi choke 30 disposed horizontally at the level of the radiator grille, with the more divergent section facing the incoming air stream. It may be seen that although this Venturi choke 30 is disposed preferably parallel to the longitudinal axis of the vehicle, if for any constructional reason a transverse mounting thereof were deemed necessary it would only be sufficient to associate therewith a duct 31 facing the incoming relative wind with its inlet end as shown in FIG. 3.
  • the vacuum chamber 16 comprises a fixed end wall 25 and a movable end wall 15 interconnected by resilient reinforced bellows 32 secured to the outer peripheral edge of said end walls.
  • the aforesaid pipe line 26 comprises an enlarged portion at its end engaging the fixed end wall 25 to provide a cylindrical chamber 33 formed with an integral flange 34 for properly securing this pipe line 26 to the end wall 25.
  • a screwthreaded portion 35 of the movable rod 17 permits of securing the mobile end wall thereto by means of a nut 36 and lock nut 37.
  • a cylindrical coil compression spring 40 surrounds the rod 17 and reacts between the outer bottom of chamber 33 and the inner bottom of a cup 45, the other face of this cup 45 being engaged by another coil compression spring 41 supporting in turn a cup 46 engaged on the other hand by a third coil compression spring 42 reacting against the movable end wall of the vacuum chamber 16.
  • chamber 16 communicating with choke 30 via pipe lines 26 to 28 is also subjected to a certain vacuum or negative pressure.
  • the air flow speed or rate increases gradually in choke 30, the vacuum also increases the volume of chamber 16 decreases due to its elasticity, the movable wall 15 approaching the fixed wall 25.
  • the movable rod 17 following the movements of wall 15 carries along the rheostat 14, the latter moving towards the chamber 16.
  • the rod 11 is stationary, like the rheostat arm 13 associated therewith. It is thus clear that the shorter the distance between the rheostat l4 and the chamber 16, the higher the resistance encountered by sliding contact 13 and the lower the speed of the fan driving motor 7, so that the fan speed decreases accordingly. If the relative speed of the vehicle continues to increase, the rheostat l4 eventually engages the end 12 of rod ll, thus causing the gradual closing of shutter 1.
  • Automatic control device for the air-intake shutter of a ventilation system for a motor vehicle comprising a fan driven by an electric motor
  • Venturi choke having its air inlet fed with the relative wind created by the vehicle motion
  • a vacuum chamber having a movable end wall
  • said movable electrical control member being rigid with a tapped socket engaged by the screwthreaded portion of a control rod adapted, by rotating a control knob associated therewith, to preset the distance between said movable member and said vacuum chamber.
  • variable-flexibility resilient connecting means comprise at least two coil compression springs having different diameters.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Air-Flow Control Members (AREA)
US00269075A 1971-08-09 1972-07-05 Ventilation shutter control of motor vehicle Expired - Lifetime US3845700A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7129045A FR2148890A5 (it) 1971-08-09 1971-08-09

Publications (1)

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US3845700A true US3845700A (en) 1974-11-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00269075A Expired - Lifetime US3845700A (en) 1971-08-09 1972-07-05 Ventilation shutter control of motor vehicle

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US (1) US3845700A (it)
FR (1) FR2148890A5 (it)
GB (1) GB1387449A (it)
IT (1) IT963604B (it)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453591A (en) * 1980-04-30 1984-06-12 Suddeutsche Kuhlerfabrik Julius Fr. Behr Gmbh & Co. Kg Air-conditioning apparatus for motor vehicles
US4508021A (en) * 1982-09-23 1985-04-02 Robert Bosch Gmbh Ventilating arrangement
US4658925A (en) * 1983-10-14 1987-04-21 Toyota Jidosha Kabushiki Kaisha Apparatus for opening and closing louver
US4825756A (en) * 1987-07-22 1989-05-02 Nissan Motor Company, Limited Controller for air conditioner system for automotive vehicle
US4858676A (en) * 1988-10-05 1989-08-22 Ford Motor Company Airconditioning system for a vehicle
WO1991005673A1 (en) * 1989-10-11 1991-05-02 Sundstrand Corporation, Inc. Airflow control system for a pod
US5486138A (en) * 1994-07-20 1996-01-23 Sorensen; Jens O. Air-pollution reduction method and system for the interior of an automobile
US6793572B2 (en) * 2002-12-21 2004-09-21 James Allen Kodak Automobile interior heat vent
US20060188530A1 (en) * 1998-07-24 2006-08-24 Yoo Seo H Bile preparations for gastrointestinal disorders
US20110244776A1 (en) * 2008-12-03 2011-10-06 GM Global Technology Operations LLC Ventilation system for a motor vehicle, method for climate control of a motor vehicle
US8655545B2 (en) 2010-05-24 2014-02-18 Chrysler Group Llc Vehicle grille shutter system and method of its use
US20150147949A1 (en) * 2013-11-27 2015-05-28 Ford Global Technologies, Llc Method for adjusting vehicle grille shutters based on vehicle speed and direction of grille shutter adjustment
WO2020087965A1 (zh) * 2018-10-30 2020-05-07 中车株洲电力机车有限公司 轨道车辆及其轨道车辆通风装置
US20220410695A1 (en) * 2021-06-29 2022-12-29 Hyundai Motor Company Active dual roll shutter apparatus for a vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472489A1 (fr) * 1979-12-26 1981-07-03 Chausson Usines Sa Circuit de climatisation a commande automatique pour vehicules

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445392A (en) * 1944-07-10 1948-07-20 Eaton Mfg Co Heating and ventilating apparatus for vehicles
FR1054992A (fr) * 1951-03-14 1954-02-15 Daimler Benz Ag Dispositif de chauffage ou de ventilation pour véhicules, en particulier pour voitures automobiles
FR1067314A (fr) * 1951-12-03 1954-06-15 Daimler Benz Ag Dispositif d'aération et de chauffage de véhicules avec amenée d'air frais par pression dynamique
US2694970A (en) * 1949-12-01 1954-11-23 Gen Motors Corp Air circulating apparatus
FR1285410A (fr) * 1961-01-13 1962-02-23 Applic Ind Soc Et Dispositif perfectionné de climatisation d'un véhicule
US3028800A (en) * 1959-07-17 1962-04-10 Richard A Anderson Automatic airflow control
US3403855A (en) * 1966-07-16 1968-10-01 Renault Automatic regulators of air conditioning systems of vehicles
FR1586880A (it) * 1968-07-09 1970-03-06
US3587439A (en) * 1968-01-23 1971-06-28 Renault Automotive air-vent automatic control systems

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445392A (en) * 1944-07-10 1948-07-20 Eaton Mfg Co Heating and ventilating apparatus for vehicles
US2694970A (en) * 1949-12-01 1954-11-23 Gen Motors Corp Air circulating apparatus
FR1054992A (fr) * 1951-03-14 1954-02-15 Daimler Benz Ag Dispositif de chauffage ou de ventilation pour véhicules, en particulier pour voitures automobiles
FR1067314A (fr) * 1951-12-03 1954-06-15 Daimler Benz Ag Dispositif d'aération et de chauffage de véhicules avec amenée d'air frais par pression dynamique
US3028800A (en) * 1959-07-17 1962-04-10 Richard A Anderson Automatic airflow control
FR1285410A (fr) * 1961-01-13 1962-02-23 Applic Ind Soc Et Dispositif perfectionné de climatisation d'un véhicule
US3403855A (en) * 1966-07-16 1968-10-01 Renault Automatic regulators of air conditioning systems of vehicles
US3587439A (en) * 1968-01-23 1971-06-28 Renault Automotive air-vent automatic control systems
FR1586880A (it) * 1968-07-09 1970-03-06

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453591A (en) * 1980-04-30 1984-06-12 Suddeutsche Kuhlerfabrik Julius Fr. Behr Gmbh & Co. Kg Air-conditioning apparatus for motor vehicles
US4508021A (en) * 1982-09-23 1985-04-02 Robert Bosch Gmbh Ventilating arrangement
US4658925A (en) * 1983-10-14 1987-04-21 Toyota Jidosha Kabushiki Kaisha Apparatus for opening and closing louver
US4825756A (en) * 1987-07-22 1989-05-02 Nissan Motor Company, Limited Controller for air conditioner system for automotive vehicle
US4858676A (en) * 1988-10-05 1989-08-22 Ford Motor Company Airconditioning system for a vehicle
WO1991005673A1 (en) * 1989-10-11 1991-05-02 Sundstrand Corporation, Inc. Airflow control system for a pod
US5031513A (en) * 1989-10-11 1991-07-16 Sundstrand Corporation Airflow control system for a pod
US5486138A (en) * 1994-07-20 1996-01-23 Sorensen; Jens O. Air-pollution reduction method and system for the interior of an automobile
US20060188530A1 (en) * 1998-07-24 2006-08-24 Yoo Seo H Bile preparations for gastrointestinal disorders
US6793572B2 (en) * 2002-12-21 2004-09-21 James Allen Kodak Automobile interior heat vent
US20110244776A1 (en) * 2008-12-03 2011-10-06 GM Global Technology Operations LLC Ventilation system for a motor vehicle, method for climate control of a motor vehicle
US8655545B2 (en) 2010-05-24 2014-02-18 Chrysler Group Llc Vehicle grille shutter system and method of its use
US20150147949A1 (en) * 2013-11-27 2015-05-28 Ford Global Technologies, Llc Method for adjusting vehicle grille shutters based on vehicle speed and direction of grille shutter adjustment
US10364735B2 (en) * 2013-11-27 2019-07-30 Ford Global Technologies, Llc Method for adjusting vehicle grille shutters based on vehicle speed and direction of grille shutter adjustment
WO2020087965A1 (zh) * 2018-10-30 2020-05-07 中车株洲电力机车有限公司 轨道车辆及其轨道车辆通风装置
US20220410695A1 (en) * 2021-06-29 2022-12-29 Hyundai Motor Company Active dual roll shutter apparatus for a vehicle
US11634023B2 (en) * 2021-06-29 2023-04-25 Hyundai Motor Company Active dual roll shutter apparatus for a vehicle

Also Published As

Publication number Publication date
DE2238938A1 (de) 1973-02-22
IT963604B (it) 1974-01-21
FR2148890A5 (it) 1973-03-23
DE2238938B2 (de) 1977-03-03
GB1387449A (en) 1975-03-19

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